Positive-shuttle-motion device.



APPLICATION FILED APR. 20, 1906.

Patented Dec 8, 1908.

M. T. McMAHON. POSITIVE SHUTTLE MOTION DEVICE.

APPLICATION FILED APR. 20, 1906.

Patented Dec. s, 1908.

2 SHEETS-SHEET 2.

MICHAEL T. MCMAHON, OF BRIDGEPORT, CONNECTICUT.

POSITIVE-SHUTTLE-MOTION DEVICE.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed April 20, 1906. Serial No. 312,819.

T 0 all whom it may concern:

Be it known that 1, MICHAEL T. Mo- MAHON, a citizen of the United States, residing at Bridgeport, in the county of Fairficld and State of Connecticut, have invented a new and useful Improvement in Positive- Shuttle-Motion Devices, of which the following is a specification.

This invention relates to an improvement in shuttle moving means for wire weave looms.

The invention is designed for use upon that class of looms used in weaving wire cloth, which cloth is generally used in connection with the art of paper making, though wire cloth of several kinds can be made upon these machines.

The object of the invention is to give the shuttle a very regular and uniform travel thereby preventing the breaking of the wire.

The invention is an improvement upon the shuttle actuating means shown and described in Patent No. 560179, dated May 12, 1896.

The invention consists of the novel features of construction hereinafter described and claimed and shown in the drawings, in which:

Figure 1 is a vertical elevation of a loom frame the lay, shafts and certain of the parts being shown in transverse section certain gears not directly related in my invention being omitted. Fig. 2 is a horizontal sectional View showing in plan the shuttle actuating means. Fig. 3 is a detail front elevation of a portion of a lay, a part of the shuttle holder being broken out and the shuttle being shown in side elevation.

In these drawings A represents the loom frame, B a pivoted lay, C a shuttle movable in the lay, the shuttle holder being longitudinally slotted as shown at B and the shuttle C is provided with a depending bar C which extends downwardly through the slot B and travels therein. The lay is swung upon its pivoted points in the ordinary manner by the means of a bar D. WVith the exception of the slot B and the depend ing bars C these parts are in common use and are not claimed as a part of my invention.

A shaft E is j ournaled in the frame A and is driven from a belt wheel E through.

In carrying out my invention I fix upon the shaft E two similar but oppositely arranged cams F, and below the said cams are pivoted treadles G and G the treadle G having at its free end an angled arm G by means of which the extreme free .ends of both treadles are brought into the same relative position with respect to a sprocket wheel H which is fixed to a' shaft H. A sprocket chain H runs over the sprocket wheel H and has its ends connected respectively to the free ends of the treadles G and G A bevel gear H is secured to each end of the shaft H and shafts J are mounted at the ends of the shaft H and at right angles thereto. The shafts J carry each a bevel pinion J which meshes with one of the bevel gears H Mounted upon the shafts J are sheaves J 2 over which run an endless belt K. Fixed to the belt K is a fork K which is preferably formed of a, plate secured to the belt and carrying a T-head to which are pivoted prongs K which form the tines of the fork. For convenience this part will be referred to hereafter as the fork K.

The operation of the device is as follows :The rotation of the shaft E will throw the cams F alternately into engagement with the treadles G and G thereby alternately depressing the said treadles, and this will impart a rotation to the sprocket wheel H first in one direction and then in I thereby be given a positive movement in alv ternate directions which movement will be uniform and regular, and by avoiding a jerky movement danger of breaking of the wires will be obviated; This jerking movement is the cause of much trouble and is due to the use of the actuating means which are subject to wear and which when worn give an irregular movement to the shuttle.

To prevent sagging of the belt K guide rods L are placed parallel to the belt and pass loosely through apertures in the fork K, which travels along said guide rods.

The bar D carries a pin D which engages the cam E, said pin being held in engagement with the cam by a spring M attached to rod D and connected to a rod M which rod is connected to any suitable portion of the loom frame. This cam, bar and spring are not in themselves new and are shown in patent to White, 547,530. I also show in the plan View a pinion E and a gear E meshing therewith but which do not form any part of mypresent invention but which are shown only because they would appear in such a view of the actual machine. The pinion E drives the gear E which is mounted on the usual cam treadle shaft E carrying cams E which operate treaclles, not shown, of the treadle frame, changing the warp after each movement of the shuttle.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent, is

1. In a loom of the kind described a shuttle having a depending bar connected thereto, an endless belt, means for moving the belt alternately in opposite directions, and a fork carried by the belt and adapted to engage the bar of the shuttle.

2. In a loom a shuttle having a bar connected thereto, a fork adapted to engage the said bar, pivoted treadles, a drive shaft cams mounted on the shaft and oppositely arranged, said cams cooperating with the treadles, and means actuated by said treadles for moving the fork alternately in opposite directions.

3. In a device of the kind described a lay provided with a shuttle holder, said holder being longitudinally slotted, a shuttle traveling therein, a bar carried by the shuttle and projecting through said slot, a fork adapted to engage said bar at predetermined times, and means for moving the said fork transversely with respect to the loom and lay and alternately in opposite directions.

4. A device of the kind described comprising a drive shaft, oppositely arranged cams upon said shaft, treadles adapted to be engaged alternately by said cams, a shaft, a sprocket wheel on the shaft, a sprocket chain running over the sprocket wheel, the said chain being secured to the treadles, an endless belt, a fork carried by said belt means for transmitting rotation of the sprocket wheel shaft to the said belt, a shuttle, and a bar carried by the shuttle adapted to be engaged by the fork.

MICHAEL T. McMAI-ION.

Vitnesses OTIS B. HoUGH, M. C. OBRIEN. 

